Dos de Mayo Uprising. People in Madrid rebel against the occupation of the city by French forces. Street fighting pits poorly armed citizens against the French army. The rebellion is put down, and the French engage in brutal reprisals.

The Russell War Crimes Tribunal in Stockholm, organized by philosopher Bertrand Russell, begins its hearings into the conduct of the American war against Vietnam. The tribunal unanimously concludes that the United States committed acts of aggression against Vietnam under the terms of international law.
It also concludes that “We find the government and armed forces of the United States are guilty of the deliberate, systematic and large-scale bombardment of civilian targets, including civilian populations, dwellings, villages, dams, dikes, medical establishments, leper colonies, schools, churches, pagodas, historical and cultural monuments. We also find unanimously, with one abstention, that the government of the United States of America is guilty of repeated violations of the sovereignty, neutrality and territorial integrity of Cambodia, that it is guilty of attacks against the civilian population of a certain number of Cambodian towns and villages.”